VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #11  
Old 04-12-2020, 06:11 PM
GOFT GOFT is offline
 
Join Date: Nov 2013
Location: Canada
Posts: 12
Default Mix too rich?

IO-390. Which Fuel servo?
RV 14 with a FM-150. Mixture-throttle interconnect bar/link on top of the servo. Shorten the link to lean the mixture.
In my experience of ONE :-)
Loosen the lock nuts and shorten the link by turning two flats clockwise (or away from you sitting in front of the aircraft. Run it up and check. If happy with the mixture, now correct the idle speed.
Again, experience of ONE. Took 1/2 turn clockwise to up the idle speed back to 750 RPM.
Reply With Quote
  #12  
Old 04-12-2020, 08:33 PM
Lizard Lips Lizard Lips is offline
 
Join Date: May 2012
Location: Longview, Texas
Posts: 79
Default FIRST START

Quote:
Originally Posted by Lizard Lips View Post
Ran my IO-390 today for the first time! Started on the 3rd blade. However it was not without problems.

1. Ran very, very rich. Had to lean the mixture a lot just to get it to idle. Was able to richen the mixture as RPM's increased but had to lean it again once I began reducing the throttle. Does anyone have the procedure for adjusting the injector mixture?

2. Hartzel prop would not cycle. I think I ran the engine long enough to fill the prop cylinders with oil, but I'm not sure. When attempting to cycle the prop, nothing happens. RPM was about 1600 at the time. Any suggestions?

3. No manifold pressure indication. However I believe this is an instrument problem rather than an engine problem. Dynon Skyview HDX system.

Joe
Longview, Texas

RV-14A 95% complete, 95% to go
Arion Lightning LS-1 Flying regularly
2020 Dues Paid
Fixed the Manifold Pressure problem. As suspected, I had a bad connection right on the sensor. Another problem bites the dust. 10,380 to go!

Joe
Longview, Texas
Reply With Quote
  #13  
Old 04-13-2020, 06:04 AM
MED MED is offline
 
Join Date: Jul 2015
Location: Aiken, SC
Posts: 620
Default

Quote:
Originally Posted by KeithB View Post
I have a Lyc 390 with Hartzell governor - it requires at least 1850 RPM for the prop to cycle. 1900-2000 works best.
+1 Both my prop and my buddy’s initially would not cycle in our RV-14As - at least not with the rpm drop seen in other airplanes. We both have Hartzell composite props. Even sent the governors back to Hartzell after discussions with both Lycoming and Hartzell. Turns out, there was no problem with the governors, and in the RV-14 configuration, they now recommend 2000 - 2100 for prop cycle, although it will cycle with less enthusiasm at something less.
__________________
MED
140236
N435MD
Miss March 2020
Reply With Quote
  #14  
Old 04-13-2020, 09:40 AM
Mike Hepperlen Mike Hepperlen is offline
 
Join Date: Oct 2010
Location: Crystal Lake, IL
Posts: 25
Default Rich idle mixture

If you are using an electrical primer solenoid purchased from Aircraft Spruce, you might have the primer lines hooked up to the wrong port. You might want to read the sales part of the add in their catalogwhere it describes how to hookup the unit.

Mike Hepperlen
Reply With Quote
  #15  
Old 04-13-2020, 09:51 AM
TS Flightlines TS Flightlines is offline
 
Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 2,589
Default

UH---no reason to have a primer solenoid with an injected engine.

Tom
__________________
Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
Proud Vendor for RV1, Donator to VAF
RV7 Tail Kit Completed, Fuse started-Pay as I go Plan
Ridgeland, SC
www.tsflightlines.com, www.asflightlines.com
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 07:00 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.